Latest articles by Jesse Emspak
December's Full Cold Moon rises tonight (Dec. 3), bringing the only "supermoon" of the year on its heels.
A planet circling a star in the constellation Cancer might have an atmosphere similar to Earth's — but with daytime temperatures hot enough to melt titanium.
Here's how to see the Venus-Jupiter conjunction on Nov. 13, 2017.
On Nov. 13, Venus and Jupiter will rise together in the morning sky, only a few hours after the planets reach conjunction at 1:05 a.m. Eastern Time. Here's how to see it.
Any aliens building around Tabby's star would have to be thinking very big.
Tonight (Nov. 5), the moon will temporarily hide the orange star Aldebaran, the brightest star in the constellation Taurus, in what astronomers call an occultation.
November's Full Beaver Moon will shine bright overnight tonight and early Saturday (Nov. 3 and 4), a day before the moon reaches perigee, its closest distance to Earth each month.
A new study suggests that Jupiter and other gas-giant planets might once have been "steam worlds" — warm ocean planets a bit bigger than Earth, with water-vapor atmospheres.
October means baseball playoffs, Halloween and, for NASA's Lunar Reconnaissance Orbiter, 100 lunar days on the moon.
Astronomers have pinpointed five pairs of merging black holes using three different space and ground-based instruments and two sky surveys.
In October 1957, amateur radio operators monitored the first signal from a spacefaring civilization — and it was us.
A set of stunning images available for download shows what it's like to ride up close and personal to a comet.
As Hurricane Irma winds down, some have asked why we can't control hurricanes.
A new quantum state has been demonstrated in a pressure exposed to crushingly high pressures, which could pave the way for new forms of electronics.
Let former NASA astronaut Mike Massimino be your guide on a tour of the solar system, on the Science Channel's new show "The Planets."
Astrophotographer Kevin Morefield shared some tips for photographing eclipses and mistakes that have cost him photographs of the rare event.
A giant star near the center of our galaxy hints, once again, that Albert Einstein was correct about gravity.
Automakers aren't the only ones who make concept cars. NASA does too, but this one is for off-roading on Mars.
With the 2017 total solar eclipse just three weeks away, Space.com is turning to the experts to learn about eclipse history and what to expect on the big day.
Astronomer, artist and educator Tyler Nordgren has designed a stunning series of posters for the total solar eclipse of Aug. 21.
For some skywatchers, the upcoming total solar eclipse is an opportunity to duplicate one of the most famous experiments of the 20th century.
